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According to an IRS study, it takes a mean time of 290 minutes for taxpayers to prepare, copy and electronically transfer a 1040 tax form. The standard deviation of this distribution is 75 minutes. A consumer watchdog agency selects a random sample of 45 taxpayers for further study.A. What is the shape, mean(expected value), and standard deviation of the sampling distribution of the sample mean for samples of size 45?B. What is the probability that the sample mean is greater than 310 minutes?C. What is the probability that the sample mean is less than 5 hours?
Many organizations are doing surveys to determine the satisfaction of their customers. Attitudes toward various aspects of campus life were the subject of one such study conducted at Purdue University.
Peter hopper, director of quality control for harley davidson
Compare it with the probability distribution of Binomia
Rosenberg Land Development (RLD) is a developer of condominium properties in the Southwest United States. RLD has recently acquired a 40.625 acre site outside of Phoenix, Arizona. Zoning restrictions allow at most 8 units per acre. Three types ..
Researchable hypothesis for Accounts Receivable
use the table below for questions 1-4.cust idorder idshipping costdelivery methoddelivery time hrscustomer
Would there be a possibility to use the correlation coefficient to identify collocations and Compare with the Chi2 test and How could we maybe do that
Calculate the mean and standard deviation of the G-7 data on unemployment rates. b. Calculate the individual z-scores of the unemployment rates for Canada and Japan. Describe what these z-score values mean in words.
Use the approximate method
If x is a binomial random variable where n = 100 and p = 0.1, find the probability that x is greater than or equal to 8 using the normal approximation to the binomial.
The labor relations manager of a large corporation wished to study the absenteeism among workers at the company's central office during the last year. A random sample of 25 workers revealed the following: an average of 9.7 days; a standard deviation ..
Consider a machine that fills soda bottles.
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